Process of manufacturing tin plates



mummy 2'; .1922;

2 SHEETS-*SHEET 1.1.

v T. EVANS. PROCESS OF MANUFACTURING Tl N PLATES.

APPLICATION FILED MAY 3. 1921'. I

1 Patented May 2, 1922.

'2 SHEETS-SHEET. 2.

" zdm UNITED "STATES PATENT, OFFICE.

'rALIEsr'N EIvANs, or LLANELLY, warns.

v PROCESS OF MANUFACTURING TIN PLATES.

To all whom it may concern:

Be it known that I, TALIESIN EVANS, a subject of the King of Great Britain and Ireland, residing at Gatcombe House, 27

Penallt Road, Llanelly, in the county of Carmarthen', Wales, have invented new and useful Improvements in the Processes of Manufacturing Tin Plates, ofwhich the following is a specification.

'This' invention has-reference to improvements in the process of manufacturing tin plates, and its chief objects are to simplify and reduce the cost of the process of manu facture and to attain as far as tinuity of working. 4

According to the invention, the plates,

after passing'singly through the first pair of rolls are not returned to the furnace, but are passed i gain through the same rolls in pairs, one on top of the other, a sufficient number of times to attain the required length. They then pass-straight on to an automatic doubling device (or are doubled manually) which thus produces four sheets or four thicknesses capable of being formed into separate sheets. From this they pass into a second furnace which is in two sections,

, end. While one section is chargedfrom the doubling side, the other section is discharged from the opposite side, andvice versa there fore giving a constant supply of heated ma- 1 each section provided with a door at each terial to rolls number two. When the plates arewithdrawn they are passed through this second pair of rolls, first singly (that is, the four thicknesses together) until they are sufiiciently increased in length, and then in pairs for two units of four thicknesses each. When the required length has been obtained, the whole would be cut by, a shears as required, It will thus be seen that there is no break in' the continuity of operation andthe various units such as furnaces, rolls, automatic doubling device and the like can be kept constantly at work.

. The accompanying drawings illustrate the invention. .7

Fig. 1 is a'more.or less diagrammatic view showlng the position in line of the different apparatus'employed in the process of making tin-plates according to the invention.

Fig. 2 is a perspective view of the bar before rolling,

Fig. 3 is a side elevation of a plate rolled therefrom,

Specification of Letters Patent.

possible con- Patented May-2,1922;

Application filed-May 3, '1921. Serial No. 466,626.

Fig. 7 is an edge view of Fig. 5 folded to half the length and then rolled to the same ig. 8 is a plan view of Fig. 7,

ig. 9 is an edge view, broken away, of two units like Fig. 7 superposed and rolled to twice the length and half the thickness and;

Fig. 10 is a plan view of Fig. 9 showing the points at which the strips are cut across to produce plates.

In the diagrammatic drawings, Figs.'2 to 10, inclusive, 00 represents the bar from which. the plates are rolled and y the plates in their successive rollings, being successively reduced in thickness and lengthened from the dimensions of Figs. 3 and 4 to those of Figs/9 and 10.

Describing the invention with reference to lenFgth as before rolling,

the drawings and as applied for instance to man' who passes them through the rolls B a sufiicient number of times until the dimensions become about 28" by 20". When this point is reached, the plates" are passed through the same rolls in pairs, that is, one plate on the top of another, until they reach the desired length of about 56". They are then doubled manually or are passed across any automatic doubling device C the place of doubling and said device, if used, being arranged next in succession in a straight line to'thc furnace A and rolls B aforementioned. The doubling of the plates produced four-sheets or four thicknesses from which separate sheets can be formed, and the doubled plates are then passed on in a straight lineintoa second furnace D. This furnace is in two sections, with doors at each end of the sections, so that the plates can be introduced at one .side and removed from the 110 E is continuous.

other. The sections are charged and discharged alternately so that the supply of heated material to the second pair of rolls This second pair of rolls is in the same straight line with the foregoing apparatus and the plates are first passed through singly (that 1s, each unit of four thicknesses by itself) once or twice. Two units (each of four thicknesses) are then laid one on top of the other and the two passed again through the rolls E until the length is increased to about 120". piece of'120" in length is then run under a shears and cut in half, producing in practice 48 sheets, each 28 by 20" in size.

This

I claim A process of manufacturing tin plates, consisting of the following steps; first, heating metallic bars and passing said heated bar's through a pair of rolls, at first singly,

then in pairs, one superposed upon the other, to reduce them to plate form and attain the required length; secondly, doubling the resulting plates; thirdly, reheating them in a second furnace, and fourthly, passing the doubled and heated plates through a second pair of rolls at first singly and then in pairs, one superposed upon the other.

TALIESIN EVANS. 

